Improved nail-machine



UNITED STATES PATENT I OFFICE.

JOHN L. KRAUsEn, or READING, AssIGNoR 'ro H1MsE1`.r,.A`ND JAMES HARPER, or PHXLADELPHIA, PENNSYLVANIA..

IMPROVED NAIL-MACHINE.

Specification forming part of Letters Patent No. 90,812, dated May d8, 1858.

`elevation of the rolls for rolling the nail-plate.

Fig. 3 represents a vertical section through the anvitblock and. its cutter and the feedingtrou,ejh. Fig; 4 represents afrontview of the anvil-block and cutter. Fig.l 5 represents a top plan of the anvil-block and its cutter,

and showing in .red .lines the oscillation of said anvil-bicck. Fig. 6 represents a side View of one of the neil-plates with the shape' of the nails cut from it in dotted lines. Fig. 7 represents a vertical transverse section through the nail-plate shown in Fig. (3.

' Similar letters of reference, Where they cccur in the several figures, denote like parte of the machine in all the drawings.

l am aware that a rotating disk cutter and vibrating' anvil have long been known in nail machinery, lout which,t'rou1 many defects in their construction and operation, have not beenfgenerally introduced. These defects l.' propone and believe i have entirely lobviated, my machine, by a simple change of cutters, being capaoe of' making nails of different eines and forms, inasmuch as I need not use a heading apparatus, while l can cut a nail haring; a head on all four of its sides, which.,

.se far ae l know or can learn, has nererheretofore been accomplished.

iliy invention may be said therefore to re iato to that class of naibmachines in which a rotary dist. cutter and a vibrating anvil are used, the special points of noveltyin which and its product i shall hereinafter fully explain.

To enable others skilled in the art to make and use my invention, l will proceed to de scribe the saine with reference to the drawings.

is hunga shaft ll, that is rotated by any rst A represents a substantial frame, in which moving power by belt or gearing. .O n this shaitis permanently fixed a' disk or wheel C, to which is affixed the cutter stocks or blocks D for holding the adjustable andremovable cutters l 2 3, (there being two sets,) set at opposite inclinations to each other ou said disk for cutting the nail head and point, as it is termed. On opposite sides of the perinief ter of the disk or wheel C there are gage plates or segments E E, which are adjustable by slots and set-screws, as seen at a a. The object of these plates is to gage the feed of lthe nail-plate, and consequently the width of the nail to be cut from it. In a suitable pillow-block F on the bed G of the machine is supported the shank or jour= nal II of an anvil so that the anvil may' freeyvibrate in its bearings. .That side of the anviLblfJclt next the disk-wheel C is cut away, as shown in Fig. 3,so that' the cuttingedge b of its cutter J' shall have its center of vibration at or near the vertical line of motion of the journal or-shank of said anvil, as shown by the red lines'of Figs. 3 and 5. The object of so hanging the nnvil-cutter is to prevent any Wear or looseuess in the anvil connections from multiplying its error, as it will do when connected to and vibrating upon a point in its rear, or anywhere not immediately underneath the cutting-edge, the motion at the center of vibration being less than at any other point in its vibration, and all irregular :notions at thc center iucreasingin an exceeding great ratio from that point to the circuiti` ference. Besides this advantage "I sti-ll have the journal-bearing of. the anvil far enough from its face to prevent the heat from eecting its lubrication, and it is also eiectually protected` from the dropping scales, which would otherwise cut and weer its bearings. These areimportant features, because if the anvil does not vibrate ou true points there will be no uniformity in the shape of the nails. The auvii and its cutter must also inciine donjnwardas it recedes from the cutting4 point, so that as the nail-plate is fed up it will lie uponthe cutter fairly that the rotating cutters may readily sever theuail therefrom.

The vanvil I and its cutter J are vibrated as follows: A cam K 011 the shaft B Works between the arms o c of n lever L, pivot-ed to the lrnme A. '.lo nu num et" this lever, projefe-ting below its pivoted "point, is attached -oue end of n. pit-man M, the other en d of said Pitman being similarlypivoted to an arm' N,

projectingfrom the shank H of the anvil, and thus every revolution of the shaft B imparts two vibrations to the anvil, there being two r nails'eut at every revolution of the shaft.. v

In the cutter J, which-is set inthe anvil I, there must he grooves 5 to receive the flanges 4on the nail-plate, as represented atlligs. 6 and 7. If there betwo flanges on the lower and upper sides ofV the plate, as shown in said Figs. G and 7, then there must be two grooves in the cutter J; `but there'need nothbe any grooves to receive the flanges on lthe upper .side of the nail-plate. If there be but one Set of flanges, then one groove `will answer. If

the anges on` the nail-plete only project on one of its sides, there need/be no grooves in the cutter, as the tint side of the plate may come next the cutter; or, if found desirable,`

` the groove may in some cases he in the feed -or nail-plete holder. A

O is the trough throughlwhich `the nailplate is fed upto the euttersby a cross-head.

P, moving on e rod (Z and on ways e e, said eross-hend being forced toward the cutters (andcerrying with it mentali-plate) by the uneoiling of the spring f from its drum g, or.

v or lever i, Fig. 3, the point of v*which catches behind the nail-'plate to 'force it up. The rear Aof this lever is raised and rounded olvvhieh holds-np the seid rear portion and prevents it from catching against the new plate in" beingdrztwu back.

'l have represented the rolls for rolling out the nailplntes is connected ind combined.

with the nail-cutting machinery', and driven from the shaft B, that; operates the nail'ma.- chinery; but l do not confine myself to this .Special combination of parts, because the rolling devcesmay'be used separated from,

the other parts of the machine, as 'shown in Fig.v 2, and the plates be rolled separate from the rnachine wherein they are to be cut,and they may b 'e connected ordisconnected, as the user'prefers.

The rollers R S TU for forming the nailplate do not differ frein those ordinarily used for rolling similar forms, except perhaps in size, and are well known to mechanics. Ot course other forms of rollsV may be used that will produce the particular form of plzttedesiret-i.

Incutting nai-lswith heads on all four ot v their sides there is no loss of material, as will be seen at Fig. 6, when the cutters are properly adjustedl for it; and from the plates offk other forms one, two, or three sides of the nail may only have heads on.

Having thus fully described the nature and 'objectof my invention, what I claim therein as new, and desire to' secure by Letters APetent, is-j c l. Forming a. groove or grooves in the anvil# cutter to receive the flange lor flanges on the nail-plates, as s et forth.

2. In combination with avibratinganvilor 'anvil-cutter, the placing of the cutting-edge ot seid cutter at or neer the center ot motion of setidvihration, in the manner and for the purpose set' forth.

3. The rims or adjustable sections E on the perimeter of the rotating cutter-wheel C for regulating the size ot` the nn-il to he cut, as Set forth.

4. In combination with e rotating eutter Wheel and n vibrating anvil, the inclination given to seid anvil and its cutter, for the purposes herein stated.

JOHN l.. KRAUSER.

Witnesses:

JAMES HARPER, tino. W. WILLIAMS; 

